SDoC · Class A

NBTC Certification for IoT Devices

IoT devices use a range of wireless technologies to transmit data — including Wi-Fi, Bluetooth, and sub-GHz radio. The applicable NBTC certification path depends on which radio technology your device uses and which frequency band it operates in.

Certification by Wireless Technology

This page focuses on the primary IoT-specific certification path: the 920–925 MHz band under the Non-RFID application, which covers sub-GHz IoT technologies such as LoRa, LoRaWAN, Sigfox, and similar LPWAN protocols.

For other wireless technologies commonly found in IoT devices:

Wi-Fi (2.4 GHz / 5 GHz / 6 GHz): Wi-Fi Router & Access Point
Bluetooth: Bluetooth Device
RFID (including UHF 920–925 MHz RFID): RFID Device

Non-RFID 920–925 MHz: Certification Requirements

The 920–925 MHz band is used by two distinct NBTC applications. If your device uses this band for non-RFID protocols such as LoRa, Sigfox, or similar LPWAN technologies, it falls under the Non-RFID application under NBTC TS 1033-2560. The certification path depends on transmit power.

Application	Frequency Band	Transmit Power	Max Power	Certification
Non-RFID	920–925 MHz	≤ 50 mW eirp	50 mW eirp	SDoC
Non-RFID	920–925 MHz	> 50 mW eirp	4,000 mW eirp	Class A

Most low-power IoT end-devices — sensors, trackers, and meters — transmit well within the 50 mW threshold and qualify for SDoC. Higher-power applications such as industrial gateways may exceed this threshold and require Class A registration.

Multi-radio IoT devices: If your product combines sub-GHz radio with Wi-Fi or Bluetooth, each radio requires separate consideration. The Non-RFID 920–925 MHz application covers only the sub-GHz radio. Wi-Fi (RLAN) and Bluetooth (Non-specific) both qualify for SDoC and do not affect the overall certification class.

Required Documents

For SDoC submissions:

Technical specification or datasheet including wireless communication details
Product photos
Test reports (RF, Safety, EMF/SAR as applicable) from accredited laboratories
Authorised declaration

For Class A submissions (additional requirement):

ISO/IEC 17025 accreditation certificate and laboratory scope

No physical product sample submission is required.

Indicative Timeline

SDoCApproximately 1 week from submission

Class AApproximately 5 weeks from submission

Additional time may be required if NBTC requests supplementary documents during review.

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